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#11 | |
![]() Join Date: Feb 2014
Location: AZ
Posts: 860
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#12 | |
![]() Join Date: Nov 2014
Location: New Jersey
Posts: 363
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I was under the impression that the OBX Bolts right up to the stock system so the cats that i buy would have to be the same size as the "fake ones" I won't be using correct? (to not throw off any alignment issues of my current cat back.) Does anyone know that length? Sorry for all the questions but I wanted to do research if i would be saving $$$$ buying OBX and putting my own cats on as opposed to buying SW with cats for $1220. Last edited by Johnny5; 04-12-2016 at 09:28 PM. |
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#13 |
Join Date: May 2013
Location: Chicago
Posts: 978
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The end of the obx are hollow 3" in and out with a slight rise. A bullet type catalytic converter would most likely fit best.
These are mine without the end pieces. ![]()
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1993 ZR-1 #211 Yellow On Beige Beast #2 1992 ZR-1 #427 Black On Black *Sold* 1985 L98 Blue On Blue *Sold* |
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#14 | |
![]() Join Date: Feb 2014
Location: AZ
Posts: 860
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#15 |
![]() Join Date: Nov 2014
Location: New Jersey
Posts: 363
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AAAH someone told me OBX came with fake cats so i assumed they were welded on and the ebay pic makes it look like its all 1 piece. Thanks guys!!
Last edited by Johnny5; 04-13-2016 at 01:33 AM. |
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#16 | |
![]() ![]() Join Date: Nov 2007
Location: Squires (near Ava MO in the Mark Twain N'tl Forest) - Missouri
Posts: 6,493
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You can have Marc Haibeck or Corry Henderson provide a pre-programmed chip that will get you in the ball park, and you can drive (read: HAMMER!) it immediately. Also, Marc programmed my fans to both come on at ~205º and turn off at ~ 200º, as well as adding anti-backfire fueling. However, dynamic tuning, i.e., on a dynojet or whatever, is the best way to get the last few ponies out of your mods. ![]()
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Good carz, good food, good friendz = the best of timez! 90 #1202 "FBI" top end ported & relieved Cam timing by "Pete the Greek" Sans secondaries Chip & dyno tuning by Haibeck Automotive SW headers, X-pipe, MF muffs Former Secretary, ZR-1 Net Registry |
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#17 | |
![]() Join Date: Feb 2014
Location: AZ
Posts: 860
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#18 |
![]() Join Date: Nov 2014
Location: New Jersey
Posts: 363
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Okay, so I bought the Oil Dipstick from Paul, Header Gaskets from Jerry, Stage 8 bolts from Summit Racing, going to buy high temp copper Permatex from Autozone tomorrow....Now it is New OBX for $550 or used Watson headers for $700.
I have to find out which cats to buy and get them fabricated to slip one end on my 2.5 inch Corsa exhaust. The last thing is whether or not i need an O2 extension and where to buy them. I bought new O2 sensors and see the 3 prong clip. Do i defnitely need an extension and where would I find one for our cars? |
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#19 |
![]() Join Date: Jun 2006
Location: Sparks, NV
Posts: 2,852
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Old thread here but it looks like the original question was never answered. What cats are other using with OBX headers.
I just installed an OBX system, headers and exhaust. I can’t stand the stink at idle, thinking about adding cats. I’m curious to see what other have installed. Thanks H ![]()
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90'ZR-1 #1461 Red/Black Ported Intake, Degreed Cams, OBX Headers & Exhaust, Fidanza FW, Secondary Delete, Custom tune, C6 GS Wheels. Sold 08 C6 Z51 Crystal Red Metallic Sold Vararam Intake, Tune, Sold 05 C6 Z51 Red/Black Sold 90'ZR-1 #1723 Black/Gray Sold but not forgotten 91' Z51 L98 White Vert. My First, you always remember your first. Sold. |
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#20 |
![]() Join Date: Nov 2014
Location: New Jersey
Posts: 363
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No cats will bolt right in. I bought magnaflows and has them welded to ibx bracket to bolt to catback exhaust
Cheaper than buying stainless works cats for $500 |
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